Gas-cock.



miran STATES, PATENT RINEHART CHRIST, OFHAMILTON, OHIO.

QFFICE? GAS-Coon.

To all whom it may concern:

Be it known that I, RINEHART CHRIST, a. citizen of the United States,residing at Hamilton, Ohio, have invented a new and useful Improvementin Gas-Cocks, of which the following is a specification.

My invention relates to gas cocks adapted to use on gas stoves orelsewhere and the objects of my improvements are to provide means for,adjusting the discharge opening in the plug within the body; to providethe plug with ahollow adjusting valve; to provide the plug with meansfor mixing air with the gas during its discharge therefrom; to providemeans for regulating the admission of gas in relation to the admissionof the air; to provide means for maintaining the parts in adjustedposition independently of the turning of the plug within the body, andto provide a simple and compact construction and assemblage of parts'combined with facility of operation and elficiency of action. Theseobjects are attained in the following described manner as illustrated inthe accompanying drawings, in which r- Figure l is a longitudinalsection of a gas cock embodying my improvements; Fig. 2, a transversesection on the line aka of Fig. l.

In the drawings, 1 represents the preferably cylindrical cock bodyformed with the usual tapered opening 2 concentric with the threadednipple 3 and with the gas inlet passage 4 concentric with the threadednipple 5. Said passage communicates with the tapered opening` andpreferably perpendicular thereto. Said body is also formed on its heelwith the usual stop 6 and with a boss 7 having a threaded opening 8wherein a screw 9 is adjustably secured.

A tapered plug 11 provided with a lever or handle 12 and with an annularshoulder 13 on its heel is maintained in longitudinal adjustment withinthe tapered opening 2'of the body by the clamping engagement of the headof screw 9 with said shoulder. An axial opening 14 extended through theplug is internally threaded at it-s heel end and reduced in size by ataper bore 15 at the other .Speieatoh 0f Letters Feten@ Applicationfiled March 19, 1908.

l'atented May 11, 1909 Serial N0. 422,018.

usual manner to limit its rotative 1nove ment.

A tubular valve 21 open at both ends and provided with a taper point 22and with a milled head 28 on its heel is adjustably threaded within theaxial opening of the plug. Said valve is reduced in size in a forwarddirection from its threaded portion to provide an annular gas chamber 24`around it and within the plug and which receives the gas throughopening 17 from the gas inlet passage 4. The discharge of the gas fromsaid annular chamber through the nozzle 16 may be regulated or entirelyshut 0H by the longitudinal adjustment of the valve with its pointtoward or in contact with the correspondingly taperedvportion 15 of theannular chamber.

The discharge of the gas through the nozzle is caused to mix with airwhich is admitted thereto through the tubular valve 21. The adjustmentof the tubular valve is not disturbed by the turning of the plug.

In operation, the head of screw 9 serves to maintain the plug in properlongitudinal adjustment within the taper opening of the ody. The tubularneedle valve 21 serves to adjust the flow of the gas through the nozzleto a predetermined quantity or to close the nozzle entirely if desired.rlhe turning of the plug does not change the adjustment of the needlevalve 21. The opening through valve 21 admits a substantially constantflow of air therethrough to be i mixed withV a variable quantity of gasin its discharge through the nozzle, thus provid ing a gas cock with anadjustable mixing device. ,j

Having fully described my improvements, what I claim as my invention anddesire to secure by Letters Patent of the United VStates is z- 1. A gascock comprising a body, a hol low tapered plug' movable therein, atubular valve longitudinally adjustable within the plug, and positivemeans adjustably secured in the body and movably engaging Vwith the heelof the plug for maintaining .said plug in proper longitudinal positionend to form the cylindrical discharge open-l within the body.

ing or nozzle 16. An opening 17 extended through the wall of the plugmay be turned thereby into or out of registration with the inlet passage4. A lug 18 formed on the heel of the plug contacts with the stop 6 inthe 2. A gas cock comprising a body formed with a boss, a hollow taperplug movable therein and formed with an annular shoulder on its heel, ascrew adjustably threaded in the boss with a portion of its head ininovable Contact with said shoulder, and u i of the plug with its headin engagement hollow needle Valve adjustably secured l, with the heelol' the plug for the purpose 10 within the plug. specified.

3. A ons cook havin@ in combination u y ,T n v body, u apered hollowulug movable therehm EHARI CHRLSF' in, a tubular Valve adjustablelongitudinally lVitnesses: within the hollow of the plug, and a screw lC. J. SMITH, adjustably threaded in the body on one side 1 R. G. DAVIS.

